:root {
  --bg: #070a14;
  --panel: rgba(14, 21, 37, 0.74);
  --line: rgba(150, 180, 255, 0.22);
  --text: #eaf1ff;
  --muted: rgba(234, 241, 255, 0.72);
  --accent: #63f5ff;
  --accent2: #a56dff;
  --food: #ff8fab;
  --snake: #71ffcf;
  --snake-body: #34d8b0;
  --obstacle: #7d89a8;
  --danger: #ff4d6d;
}

body[data-theme="violet"] {
  --bg: #0b0616;
  --panel: rgba(25, 14, 42, 0.76);
  --line: rgba(196, 125, 255, 0.22);
  --accent: #c77dff;
  --accent2: #72ddf7;
  --snake: #f1c0ff;
  --snake-body: #c77dff;
  --food: #ffb3c6;
}

body[data-theme="lava"] {
  --bg: #160704;
  --panel: rgba(43, 18, 12, 0.76);
  --line: rgba(255, 138, 76, 0.2);
  --accent: #ff9f1c;
  --accent2: #ff4040;
  --snake: #ffe66d;
  --snake-body: #ff9f1c;
  --food: #ff4d6d;
}

body[data-theme="matrix"] {
  --bg: #020804;
  --panel: rgba(5, 28, 13, 0.76);
  --line: rgba(57, 255, 20, 0.18);
  --accent: #39ff14;
  --accent2: #aaff00;
  --snake: #d2ff72;
  --snake-body: #39ff14;
  --food: #f8ff7a;
}

body[data-theme="crt"] {
  --bg: #100f16;
  --panel: rgba(28, 27, 38, 0.78);
  --line: rgba(255, 255, 255, 0.12);
  --accent: #00e5ff;
  --accent2: #ff2bd6;
  --snake: #f7ff58;
  --snake-body: #00e5ff;
  --food: #ff2bd6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 30%), radial-gradient(circle at 80% 0%, color-mix(in srgb, var(--accent2) 18%, transparent), transparent 34%), var(--bg);
  display: grid;
  place-items: center;
  overflow-x: hidden;
  padding: 18px 0;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 85%);
  pointer-events: none;
}

.app {
  width: min(94vw, 700px);
  display: grid;
  gap: 16px;
  z-index: 1;
}

.glass {
  backdrop-filter: blur(10px);
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.35);
}

.hud {
  display: grid;
  grid-template-columns: repeat(3, minmax(74px, 1fr)) auto;
  gap: 12px;
  align-items: center;
  padding: 14px 18px;
}

.hud-stat { min-width: 0; }
.hud-actions { display: flex; gap: 8px; justify-content: flex-end; }
.label { margin: 0; font-size: .75rem; opacity: .7; letter-spacing: .08em; text-transform: uppercase; }
h1,h2 { margin: 2px 0 0; font-weight: 800; text-shadow: 0 0 16px color-mix(in srgb, var(--accent) 45%, transparent); }
h1 { font-size: clamp(1.6rem, 5vw, 2.1rem); }
h2 { font-size: clamp(1.15rem, 4vw, 1.45rem); }

.stage { position: relative; padding: 16px; }
canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.08);
  background: #060a16;
  box-shadow: inset 0 0 40px color-mix(in srgb, var(--accent) 18%, transparent);
  touch-action: none;
}

.stage.shake { animation: shake .34s linear; }
@keyframes shake {
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.overlay {
  position: absolute;
  inset: 16px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 14px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(5,9,20,.66), rgba(5,9,20,.94));
}
.overlay.hidden { display: none; }
.overlay-card { max-width: 560px; display: grid; gap: 12px; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; font-size: .72rem; }
.overlay h2 { margin: 0; font-size: clamp(2rem, 8vw, 4rem); }
.overlay p { margin: 0; color: var(--muted); }
.settings { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.settings label { display: grid; gap: 6px; text-align: left; color: var(--muted); font-size: .84rem; }
select {
  width: 100%;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.08);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
}
select option { color: #08101f; }

.legend { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; color: var(--muted); font-size: .85rem; }
.legend span { display: inline-flex; gap: 5px; align-items: center; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; box-shadow: 0 0 12px currentColor; }
.food-normal { background: #ff8fab; color: #ff8fab; }
.food-golden { background: #ffd166; color: #ffd166; }
.food-slow { background: #7bdff2; color: #7bdff2; }
.food-shield { background: #b8f7d4; color: #b8f7d4; }
.food-poison { background: #ef476f; color: #ef476f; }

.btn {
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.06);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.btn:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--accent) 60%, white); }
.btn.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  border: none;
  color: #08101f;
  box-shadow: 0 0 22px color-mix(in srgb, var(--accent) 30%, transparent);
}
.btn.icon { min-width: 44px; padding-inline: 10px; }
.overlay-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

kbd { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); padding: 2px 8px; border-radius: 7px; }
.controls { font-size: .88rem; }

.touch-controls {
  display: none;
  grid-template-columns: repeat(3, 64px);
  grid-template-areas: ". up ." "left down right";
  gap: 8px;
  justify-content: center;
  padding: 12px;
}
.touch-btn {
  min-height: 54px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.08);
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 900;
}
.touch-btn[data-dir="up"] { grid-area: up; }
.touch-btn[data-dir="left"] { grid-area: left; }
.touch-btn[data-dir="down"] { grid-area: down; }
.touch-btn[data-dir="right"] { grid-area: right; }

.dashboard { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 14px 16px; }
.dashboard p { margin: 4px 0 0; color: var(--muted); }
.leaderboard { margin: 4px 0 0; padding-left: 22px; color: var(--muted); }
.leaderboard:empty::after { content: 'Пока нет результатов'; }

@media (max-width: 640px) {
  body { place-items: start center; padding-top: 10px; }
  .hud { grid-template-columns: repeat(3, 1fr); }
  .hud-actions { grid-column: 1 / -1; justify-content: stretch; }
  .hud-actions .btn { flex: 1; }
  .settings, .dashboard { grid-template-columns: 1fr; }
  .touch-controls { display: grid; }
  .stage { padding: 10px; }
  .overlay { inset: 10px; }
}

.mission {
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-radius: 12px;
  padding: 10px 12px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  font-weight: 700;
}

.achievements {
  margin: 4px 0 0;
  padding-left: 0;
  list-style: none;
  color: var(--muted);
  display: grid;
  gap: 4px;
}

.achievements li::before { content: '◇ '; color: var(--accent); }
.achievements li.unlocked::before { content: '◆ '; color: #ffd166; }

.combo-pop {
  animation: comboPop .28s ease;
}

@keyframes comboPop {
  50% { transform: scale(1.08); text-shadow: 0 0 24px var(--accent); }
}

.editor-hint {
  outline: 2px dashed color-mix(in srgb, var(--accent) 70%, white);
  outline-offset: 4px;
}

@media (min-width: 641px) {
  .settings { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .dashboard { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.food-teleport { background: #c77dff; color: #c77dff; }
.food-double { background: #f7ff58; color: #f7ff58; }
.food-ghost { background: #ffffff; color: #ffffff; }